Engine System Inputs
∗ Stated accuracies are subject to the accuracy of the senders used.
Fuel Level Sensing
Accuracy: ±3% of indication or ±2% ∗
Range: 33 to 240 Ω nominal
Terminals: P16, P19 (common)
Coolant Temperature Sensing
Accuracy: ±3% of indication (37°C to 115°C (99°F to 239°F))
±2°, whichever is greater at 25°C (77°F) ∗
Range: 62.6 to 637.5 Ω nominal
Terminals: P18, P19 (common)
Oil Pressure Sensing
Accuracy: ±3% of indication (0 to 690 kPa) or ±12 kPa, whichever is greater at 25°C
(77°F)
Range: 34 to 240 Ω nominal
Terminals: P13, P19 (common)
Battery Voltage Sensing
Accuracy: ±3% of indication or ±0.2 V, whichever is greater
Nominal: 12 or 24 Vdc
Range: 8 to 32 Vdc (battery dip ride-through to 6 Vdc for 0.75 sec)
Burden: 16 W maximum
Terminals: P20 (+), P21 (–)
Magnetic Pickup Sensing
Voltage Range: 3 V to 35 V peak continuous into 13 kΩ (during cranking)
Frequency Range: 32 to 10,000 Hz
Terminals: P39 (+), P40 (–)
Engine RPM Sensing
Accuracy: ±0.5% of indication or ±2 rpm, whichever is greater at 25°C (77°F)
Range: 750 to 3,600 rpm
Calculated Data
Voltamperes
Accuracy: ±2% indication or ±2 kVA, whichever is greater
Range: 0 to 9,999 kVA
Engine Run Time
Accuracy: ±0.5% of reading or ±1 hour, whichever is greater at 25°C (77°F)
Range: 0 to 99,999 hours
Maintenance Interval
Accuracy: ±0.5% of reading or ±1 hr, whichever is greater at 25°C (77°F)
Range: 0 to 5,000 hours
Generator Protection Functions
Overvoltage (59) and Undervoltage (27)
Pickup Range: 70 to 576 Vac
Pickup Increment: 1 Vac
Inhibit Frequency Range: 20 to 400 Hz (applies to 27 function only)
Time Delay Range: 0 to 30 s
Time Delay Increment: 0.1 s
1-4 DGC-500 General Information 9355400990 Rev H
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